Falhas do tipo CWE-122

3.736 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2024-49005HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49004HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-49001HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2025-27487HIGHRemote Desktop Client Remote Code Execution VulnerabilityEPSS 1.5%CVE-2022-0392MEDIUMHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2024-49775CRITICALA vulnerability has been identified in Opcenter Execution Foundation (All versions < V2501.0001), Opcenter Intelligence (All versions < V250EPSS 1.5%CVE-2025-21239HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.5%CVE-2025-21248HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.5%CVE-2025-21241HIGHWindows Telephony Service Remote Code Execution VulnerabilityEPSS 1.5%CVE-2023-51596HIGHBlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.5%CVE-2022-22188HIGHJunos OS: QFX5100/QFX5110/QFX5120/QFX5200/QFX5210/EX4600/EX4650 Series: When storm control profiling is enabled and a device is under an active storm, a Heap-based Buffer Overflow in the PFE will cause a device to hang.EPSS 1.5%CVE-2021-29464LOWHeap buffer overflow in Exiv2::Jp2Image::encodeJp2HeaderEPSS 1.5%CVE-2018-3858HIGHAn exploitable heap overflow exists in the TIFF parsing functionality of Canvas Draw version 4.0.0. A specially crafted TIFF image processedEPSS 1.5%CVE-2021-3872HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.5%CVE-2023-50230HIGHBlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.5%CVE-2024-43589HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.5%CVE-2025-24051HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.5%CVE-2023-36425HIGHWindows Distributed File System (DFS) Remote Code Execution VulnerabilityEPSS 1.5%CVE-2022-41991CRITICALA heap-based buffer overflow vulnerability exists in the m2m DELETE_FILE cmd functionality of Siretta QUARTZ-GOLD G5.0.1.5-210720-141020. A EPSS 1.5%CVE-2023-7104MEDIUMSQLite SQLite3 make alltest sqlite3session.c sessionReadRecord heap-based overflowEPSS 1.5%